Measurement, calibration and probe storage apparatus for measuring pH of fluids and slurries

• US 5,325,709 A
• Filed: 01/14/1993
• Issued: 07/05/1994
• Est. Priority Date: 01/14/1993
• Status: Expired due to Fees

• Current Assignee: Halliburton Company
• Original Assignee: Halliburton Company
• Inventors: Lee, C. Lynden
• Primary Examiner(s): Housel, James C.
• Assistant Examiner(s): Cano, Milton I.
• Application Number:
  US08/004,324
• Time in Patent Office: 537 Days
• Field of Search: 73/53.01, 73/61.41, 73/61.43, 73/61.44, 73/151, 73/151.5, 73/1 R, 73/19.09, 73/19.1, 422/68.1, 422/82.03, 166/40, 166/48, 166/250, 436/29
• US Class Current: 73/61.43
• CPC Class Codes: E21B 49/08 Obtaining fluid samples or testing fluids, in boreholes or wells
• CPC Class Codes: G01N 1/2035 by deviating part of a fluid stream, e.g. by drawing-off or tapping

Abstract

A measurement/calibration/probe storage apparatus particularly suitable for measuring pH of fluids and slurries used in the treatment of oil and gas wells. The apparatus includes an enclosure having a conduit for the conveyance of a fluid or slurry therein, a flow chamber being in fluid communication with the conduit, a probe sensor for measuring a preselected attribute of a fluid, or slurry, residing within, or, passing through the flow chamber. The apparatus further includes an electronic processor in electrical communication with the probe sensor for calculating and providing a display of the attribute being measured and a calibration chamber being configured to receive the probe sensor. At least one calibration fluid container being in fluid communication with the calibration chamber is also provided. A control valve is provided for controlling the flow of fluid from each calibration fluid container into the calibration chamber and for controlling the draining of the calibration chamber.

Claims

1. A measurement, calibration and probe storage apparatus for use in connection with the protection of oil and gas comprising:

a) a rigid, protective, mountable, enclosure having a conduit means routed therethrough for the conveyance of at least one of a fluid, a slurry and mixture thereof;

b) a cylindrical flow chamber being configured to accommodate a removable probe sensor means therein and a removable dust cap thereon, the flow chamber being in fluid communication with the conduit;

c) at least one removable dip probe sensor means for measuring a preselected attribute of said at least one of a fluid, a slurry, and mixture thereof, in which the probe sensor is immersed;

d) an electronic processor means in electrical communication with the probe sensor for calculating and rendering a value of the attribute being measured;

e) a cylindrical probe sensor storage and calibration chamber being proximal to the flow chamber, adapted to accommodate the removable probe sensor therein and a removable dust cap thereon, the storage and calibration chamber further having a drain tube and an overfill tube, both being in fluid communication with the storage and calibration chamber, the drain tube being selectively controlled by a multi-position control valve means;

f) a dust cap being configured to be accommodated by the flow chamber and the storage and calibration chamber; and

g) a control valve means for selectively controlling the filling of the storage and calibration chamber from at least one calibration fluid reservoir, and for the draining of the calibration chamber.

2. The apparatus of claim 1 further comprising a removable protective shield adapted to be fitted on a predetermined section of the probe sensor for protecting the sensor mounted within the sensor probe from abrasives contained within a fluid, or slurry, being monitored.

3. The apparatus of claim 1 further comprising a shut off valve being positioned in the conduit up stream of the flow chamber.

4. The apparatus of claim 1 wherein the enclosure is rectangularly shaped, has a front access panel, and has mounting tabs extending from the periphery of the enclosure at preselected locations.

5. The apparatus of claim 1 wherein the attribute being measured in the pH of a calibration liquid, or a process liquid or slurry.

6. The apparatus of claim 1 wherein said at least one calibration liquid reservoir is provided with a tubing means fluidly connecting said at least one calibration liquid reservoir with the multi-posit on control valve means and wherein each tubing means includes an in-line shut off valve.

7. The apparatus of claim 1 wherein the removable probe sensor, the storage and calibration chamber, the removable dust caps and the flow chamber have complementary threaded lock means for interchangeably engaging the probe sensor and dust caps about the flow chamber and the storage and calibration chamber.

8. The apparatus of claim 1 wherein the electrical processing means includes output means for recording measurements and includes an input connection for connection auxiliary power means.

9. The apparatus of claim 1 wherein the protective enclosure is rectangularly-shaped, has mounting tabs, has a front access panel, and is constructed of steel.

10. A pH measurement, calibration and probe storage apparatus for use in connection with the production of oil and gas comprising:

a) a protective, mountable, steel rectangular enclosure having mounting tabs and a front access panel and having a conduit means routed therethrough for the conveyance of at least one of a fluid, a slurry, and mixture thereof;

b) a cylindrical flow chamber being configured to accommodate a removable probe sensor means therein and a removable dust cap thereon, the flow chamber being in fluid communication with the conduit;

c) a shut-off valve being located in the conduit means upstream of the flow chamber;

d) at least one removable dip probe sensor means for measuring the pH of at least one of a fluid, a slurry, and mixture thereof, in which the probe sensor is immersed, and the probe sensor means being provided with a means for shielding the probe sensor from particles and abrasives that may be present within the at least one of a fluid, a slurry, and mixture thereof, being measured;

e) an electronic processor means in electrical communication with the probe sensor for calculating and rendering a value of the attribute being measured and the electrical processing means including an output means for recording measurements and including an input connection for connecting auxiliary power means;

f) a cylindrical probe sensor storage and calibration chamber being adapted to accommodate the removable probe sensor therein and a removable dust cap thereon, the storage and calibration chamber further having a drain tube and an overfill tube, both being in fluid communication with the storage and calibration chamber, the drain tube being selectively controlled by a multi-position control valve means;

g) a dust cap being configured to be accommodated by the flow chamber and the storage and calibration chamber; and

h) a multi-position control valve means for selectively controlling the filling of the storage and calibration chamber from at least two calibration fluid reservoirs, and for the draining of the calibration chamber.

11. The apparatus of claim 10 wherein each calibration liquid reservoir is provided with a means for fluidly connecting each calibration liquid reservoir with the multi-position control valve means and wherein each fluid connection means includes an in-line shut off valve.

12. The apparatus of claim 10 wherein the removable probe sensor, the storage and calibration chamber, the removable dust caps and the flow chamber have complementary threaded lock means for interchangeable engaging the probe sensor and dust caps about the flow chamber and the storage and calibration chamber.